Summons and summonses shall not last more than twelve hours. If the case is particularly serious and complicated and requires detention or arrest measures, the time for summoning and detention shall not exceed 24 hours.

According to the provisions of Article 92 of China's Criminal Procedure Law, a criminal suspect who does not need to be arrested or detained may be summoned to a designated place or residence or unit for interrogation, but the certificate of the people's procuratorate or the public security organ shall be produced. "The purpose of summoning is to ensure that criminal proceedings are carried out in a planned way and cases are handled in a timely manner, and legal litigation documents-summonses must be used for summoning.